Dr. jones is known for his difficult pop quizzes. immediately before he springs a pop quiz on his students, he typically goes to the classroom door and closes it, and his students begin to feel anxious and tense. students soon learn to anticipate a pop quiz and feel anxious whenever dr. jones closes the classroom door. closing the door has become a(n) stimulus.

this statement is true.

forests are public goods, available for everybody. when usage of such a good becomes interesting for consumers and its usage increases, there can be a risk of overexploitation. it is a non rival good therefore, if one person consumes the good it does not reduce the availability for subsequent consumers.

these caracteristics require the establishment of measures in order to prevent the destruction of a commonly owned space, for example, to restrict the amount of people that have access to the same time.

hello,

answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

best of luck!